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67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC)
Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS)

Deutsche Gesellschaft für Neurochirurgie (DGNC) e. V.

12. - 15. Juni 2016, Frankfurt am Main

Microanatomy of the subcallosal artery in 7 Tesla magnetic resonance angiography: supposed clinical relevance for microneurosurgery

Meeting Abstract

  • Toshinori Matsushige - Klinik für Neurochirurgie, Universitätsklinik Essen, Essen, Germany; Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan; Erwin L. Hahn Institut für Kernspintomographie, Universität Duisburg-Essen, Essen, Germany
  • Bixia Chen - Klinik für Neurochirurgie, Universitätsklinik Essen, Essen, Germany; Erwin L. Hahn Institut für Kernspintomographie, Universität Duisburg-Essen, Essen, Germany
  • Harald H. Quick - Erwin L. Hahn Institut für Kernspintomographie, Universität Duisburg-Essen, Essen, Germany; Hochfeld und Hybrid MRT, Universität Duisburg-Essen, Essen, Germany
  • Michael Forsting - Institut für Diagnostische und Interventionelle Radiologie und Neuroradiologie, Universitätsklinikum Essen, Essen, Germany
  • Ulrich Sure - Klinik für Neurochirurgie, Universitätsklinik Essen, Essen, Germany
  • Karsten H. Wrede - Klinik für Neurochirurgie, Universitätsklinik Essen, Essen, Germany; Erwin L. Hahn Institut für Kernspintomographie, Universität Duisburg-Essen, Essen, Germany

Deutsche Gesellschaft für Neurochirurgie. 67. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie (DGNC), 1. Joint Meeting mit der Koreanischen Gesellschaft für Neurochirurgie (KNS). Frankfurt am Main, 12.-15.06.2016. Düsseldorf: German Medical Science GMS Publishing House; 2016. DocP 004

doi: 10.3205/16dgnc379, urn:nbn:de:0183-16dgnc3791

Veröffentlicht: 8. Juni 2016

© 2016 Matsushige et al.
Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). Lizenz-Angaben siehe http://creativecommons.org/licenses/by/4.0/.


Gliederung

Text

Objective: To investigate in-vivo microanatomy of the subcallosal artery branching from the anterior communicating artery (ACoA) using time-of-flight (TOF) magnetic resonance angiography (MRA) at 7 Tesla and its relevance for microneurosurgery.

Method: Eighty subjects, including 15 healthy volunteers and 65 patients, were included in this study. All subjects were prospectively evaluated utilizing a 7 Tesla whole-body MR system equipped with a 32-channel head coil between January 2011 and November 2015. Three raters identified branches from ACoA in maximum intensity projections (MIP) of TOF MRA at 7 Tesla acquired with 0.22 × 0.22 × 0.41 mm3 resolution. Anatomical variations in the course of the subcallosal artery, maximum diameter, as well as length and branching angle from the ACoA were assessed in sagittal MIP views (slab thickness 2.2 mm). Branching angles of subcallosal arteries from ACoA were measured in relation to the anterior commissure (AC) - posterior commissure (PC) line. Length of branching arteries was traced and measured as far as visible in the reconstructed sagittal MIP views.

Results: Branches from the ACoA were visualized in 68 of 80 (85.0%) subjects and were identified as the subcallosal artery (94.1%) and the accessory anterior cerebral artery (5.9%). In 12 subjects without vessels branching from ACoA, 7 subjects showed an artery originating from the proximal A2 segment running in front of the lamina terminalis to the rostrum and genu of the corpus callosum. Overall, in 75 of 80 (93.8%) subjects branching vessels running in the pericallosal cistern could be identified. The course of the subcallosal artery was classified into 3 groups; C-shaped (53.1%), straight (18.8%), and S-shaped (28.1%). The mean branching angle from ACoA in C-shaped, straight, and S-shaped course patterns were 38.1° (standard error of the mean (SEM) 3.8), -10.1° (SEM 3.5), and -30.8° (SEM 3.3), respectively. There was a significant difference between the branching angles of C-shaped and straight (p < 0.0001), between C-shaped and S-shaped (p < 0.0001), as well as between straight and S-shaped (p = 0.0026) course patterns.

Conclusions: High-resolution in-vivo 7 Tesla TOF MRA can delineate the microanatomy of the subcallosal artery, which has previously only been fragmentarily described in cadaveric studies. Three main variants of course patterns and branching angles from ACoA could be identified that have supposedly clinical relevance for microneurosurgery.